Unverified80% confidenceSolutionTime unknown
机箱风道遵循正压差原则：进风扇总风量应略大于出风扇（如3进2出），形成正压可减少缝隙积灰；纯排气负压会从防尘网外缝隙吸入大量灰尘
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Unverified机箱风道搭配方案：前进后出+顶部出风形成正压差（进风数≥出风数）可减少内部积灰，进风口建议加防尘网；纯负压虽散热略好但缝隙易积灰87% similarUnverified机箱风扇布局遵循前进后出、下进上出的正压/微正压原则：进风数量略多于出风可形成正压减少灰尘从缝隙进入；负压布局（出风多）散热略好但积灰快85% similarUnverified机箱风道搭建标准方案：前/下进气+后/上排气，进气风扇数量或风量略大于排气形成微正压，可减少灰尘从缝隙吸入；进气位加装防尘网并配高静压风扇克服网阻83% similarUnverified灰尘主要从机箱负压区（无风扇的缝隙）吸入，仅罩顶部无用；应在所有进风口贴磁吸滤网并保持机箱正压（进风风扇风量大于出风），比外置防尘罩更根治积灰81% similarUnverified风道遵循前进后出、下进上出原则：前面板2-3个进风扇 + 后部1个出风扇形成正压差可减少进灰，进风扇总风量应略大于出风扇（约1.2倍）保持机箱内正压79% similar
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